Seasider wrote:That would be telling, but long night shifts and totally empty and straight motorway may have had some part to play, and of course I was referring to our testing of the kmh display, your honour.

I know for sure that it can display speeds well over 100mph too. And above 180 km/h an hour too. I live near the German border...No speed limit, just high phone bill.

The earlier statement that the speed can't be accurate because the positions aren't accurate is wrong, and shouldn't be used as a justification for not fixing the speed display bug. Of course, there may be other reasons, such as limitations of Apple's GPS implementation.

The location APIs for both iOS and Android both give you the instantaneous speed in m/s via the method above, simply because that's what comes out of all off the shelf GPS chips.

Given that what comes out of the location APIs for speed is in meters per second, I don't see why they're doing any conversion to knots to begin with. Just store it as meters per second and convert on display.